Home / 5,439.28-8,159.09-2,589.15

Finding the Fourth Proportional to 5,439.28, 8,159.09 and 2,589.15

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Solution

The fourth proportional to 5,439.28, 8,159.09 and 2,589.15 is: 3,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.28 : 8,159.09 = 2,589.15 : x
  2. Step 2: Convert to fraction form
    5,439.28/8,159.09 = 2,589.15/x
  3. Step 3: Cross multiply
    5,439.28x = 8,159.09 × 2,589.15
  4. Step 4: Simplify right side
    5,439.28x = 21,125,107.87
  5. Step 5: Solve for x
    x = 21,125,107.87/5,439.28
  6. Step 6: Final answer
    x = 3,883.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.